Wyoming Self-Defense Laws: Stand Your Ground & Castle Doctrine (2026)

Yes, Wyoming is a stand-your-ground state. Under W.S. 6-2-602(e), a person who is lawfully present in any location, is not the initial aggressor, and is not engaged in illegal activity has no duty to retreat before using reasonable defensive force. The 2018 amendment (HB 0168) rewrote and expanded the statute, adding the stand-your-ground rule, a new reasonableness definition, and explicit criminal immunity.

Information last verified on June 2, 2026.

Jurisdiction scope: This article covers Wyoming state law only, specifically W.S. 6-2-602 and W.S. 6-1-204, as amended through the 2018 session (HB 0168). It does not address federal law or the law of other states. For a 50-state comparison, see self-defense laws by state.

Is Wyoming a Stand-Your-Ground State?

Yes. Wyoming is a stand-your-ground state under W.S. 6-2-602(e), which provides that a person who is attacked in any place where they are lawfully present has no duty to retreat before using reasonable defensive force, provided they are not the initial aggressor and are not engaged in illegal activity. That language, added by the 2018 amendment, removed any prior common-law obligation to retreat from a confrontation before defending oneself.

The stand-your-ground rule in subsection (e) applies in any location where the person has a lawful right to be: a public street, a parking lot, a bar, a park, or a friend's driveway. Unlike the narrower castle doctrine, which attaches to the home and certain protected spaces, subsection (e) is location-neutral. The only conditions are that the person is lawfully present, is not the one who started the fight, and is not committing a crime at the time.

The rule does not eliminate the underlying requirement that defensive force be reasonable. Subsection (a) still governs when force is reasonable: it must be the force a reasonable person in like circumstances would judge necessary to prevent an injury or loss, and no more. Stand-your-ground removes the escape obligation; it does not license unlimited force.

Before 2018, Wyoming's self-defense framework relied on older statutory language that courts interpreted against a backdrop of common-law retreat rules. HB 0168, signed in 2018, rewrote 6-2-602 in its entirety, codifying a clear no-retreat rule alongside the reasonableness definition and immunity provisions.

Castle Doctrine: W.S. 6-2-602(b) and (d) Presumptions

Wyoming's castle doctrine operates through two interlocking statutory presumptions. W.S. 6-2-602(b) presumes that a defender held a reasonable fear of imminent peril of death or serious bodily injury when an intruder unlawfully and forcibly entered or attempted to enter their home or habitation, or attempted to remove them from it against their will. W.S. 6-2-602(d) separately presumes that any person who unlawfully and by force enters or attempts to enter another's home or habitation is doing so with the intent to commit an unlawful act involving force or violence. Both presumptions are limited to homes and habitations; neither extends to vehicles.

That presumption matters because it addresses the reasonableness element in subsection (a). A defender inside their home who sees an unlawful forcible entry does not need to independently demonstrate that a reasonable person would have feared violence: the statute supplies that inference from the nature of the entry itself. The prosecution bears the burden of rebutting the presumption.

What the castle doctrine covers in Wyoming:

• Home: The place where a person lives, including a house, apartment, or mobile home that functions as a primary residence.
• Habitation: A broader term under W.S. 6-2-602(g) that encompasses any structure used or intended for use as a dwelling, including a hotel room or temporary lodging.

The presumption under subsection (b) does not apply in every home-entry situation. Subsection (c) lists exceptions: the person entering is a lawful resident of the home without a domestic-violence protection order prohibiting their presence; the person being removed is a child in the lawful custody of the entrant; or the entrant is a peace officer or corrections employee acting in their official capacity.

Outside those exceptions, the forcible unlawful entry into a home or habitation triggers both presumptions. A homeowner who uses defensive force against someone breaking down their front door has both statutory presumptions working in their favor from the first moment of any criminal or civil proceeding.

Wyoming's castle doctrine does not extend to a person's yard, detached garage, or enclosed porch as its own independent presumption location, though the stand-your-ground rule in subsection (e) still removes any duty to retreat in those locations because the person is lawfully present.

Watch out: The presumption of intent in subsection (d) tells the court what the intruder is presumed to have intended. It does not automatically mean deadly force is the correct response. The defender's actual use of force must still be reasonable under subsection (a): no more force than a reasonable person in like circumstances would judge necessary. Proportionality is a separate analysis.

When Deadly Force Is Justified in Wyoming

W.S. 6-2-602(a) defines reasonable defensive force as the force a reasonable person in like circumstances would judge necessary to prevent an injury or loss, and no more, including deadly force if necessary to prevent imminent death or serious bodily injury to the person using the force or to another person.

The phrase "and no more" is the proportionality floor built into subsection (a). Wyoming law does not permit a defender to use greater force than a reasonable person would judge necessary. The standard is objective: a jury evaluates whether a reasonable person with the same information and in the same circumstances would have judged the force necessary.

Subsection (a) also contains an honest-belief provision: the necessity to prevent harm includes a necessity that arises from an honest belief that the danger exists, whether the danger is real or apparent. This means a defender who genuinely but mistakenly believed they faced imminent deadly harm is not automatically outside the statute, as long as the belief was also objectively reasonable.

Deadly force is justified when:

1. The defender honestly and reasonably believes imminent death or serious bodily injury to themselves or another person is about to occur.
2. No lesser degree of force would prevent that harm in the circumstances as the defender reasonably perceived them.
3. The defender is not the initial aggressor and is not engaged in illegal activity (subsection (e)).

Factors courts and juries consider:

• The size, strength, and weapons disparity between the parties.
• Whether the attacker had already used force or made explicit threats.
• The speed and severity of the threat as it developed.
• Whether retreat was genuinely available (though not required under subsection (e)).
• The setting and any relevant history between the parties.

The honest-belief element creates some protection for defenders who acted on a reasonable misperception of danger. But the objective "reasonable person" overlay means that a defender whose fear, though genuine, was not one a reasonable person would have shared in the same situation may still face a jury question on justification.

Immunity and the Pretrial Hearing

Wyoming provides two distinct layers of immunity for those who use reasonable defensive force: criminal immunity under W.S. 6-2-602(f) and civil immunity under W.S. 6-1-204. The 2018 amendment created both, and both are procedurally enforced through pretrial hearings.

Criminal Immunity: W.S. 6-2-602(f)

Subsection (f) states that a person who uses reasonable defensive force as defined by subsection (a) shall not be criminally prosecuted for that use of force. The text of subsection (f) is categorical: it is phrased as a prohibition on prosecution, not merely as an affirmative defense to be decided at trial. A defendant who establishes that their use of force was reasonable under subsection (a) is entitled to invoke subsection (f) before trial proceeds. Subsection (f) does not itself specify the procedural mechanism for that determination; the exact procedure for raising immunity, including the allocation of burdens at a pretrial hearing, is governed by Wyoming court practice under this statute.

Civil Immunity: W.S. 6-1-204

The civil immunity provision is separate from 6-2-602. W.S. 6-1-204 provides that a person who uses reasonable defensive force pursuant to W.S. 6-2-602 is immune from civil action for that use of force.

To invoke civil immunity, the defendant files a pretrial motion. The court holds a hearing prior to trial and grants the motion if the defendant proves by a preponderance of the evidence that they used reasonable defensive force under W.S. 6-2-602. The preponderance standard means more likely than not: a lower bar than the beyond-a-reasonable-doubt standard at a criminal trial.

If civil immunity is granted, the statute mandates a further benefit: the court shall award reasonable attorney fees, court costs, compensation for any loss of income, and all other expenses the person incurred in defending the civil action. The fee award is automatic upon a finding of immunity, not discretionary.

This mandatory fee-shifting provision is significant. It means that a plaintiff who sues someone who was lawfully acting in self-defense and loses at the pretrial immunity stage is on the hook for the defendant's entire litigation costs. The fee award creates a strong financial disincentive for filing civil suits against legitimate defenders.

Summary of immunity protections:

Type	Statute	Procedure	Burden	Outcome if granted
Criminal	W.S. 6-2-602(f)	Pretrial hearing	State must disprove by preponderance	Charges dismissed
Civil	W.S. 6-1-204	Pretrial hearing	Defendant proves by preponderance	Case dismissed + mandatory attorney fee award

When Self-Defense Fails

Wyoming's self-defense protections are substantial, but they are not absolute. Several conditions eliminate or reduce the availability of the justification.

Initial aggressor. W.S. 6-2-602(e) expressly conditions the no-retreat rule on the person not being the initial aggressor. A person who provokes or initiates the confrontation loses the benefit of stand-your-ground and must demonstrate that they withdrew from the encounter and the other party continued to use or threaten force before the justification revives.

Illegal activity. Subsection (e) also requires that the person not be engaged in illegal activity at the time. A person who is committing a crime when the confrontation begins cannot invoke the no-retreat protection. They may still argue the subjective elements of self-defense, but the statutory stand-your-ground rule does not apply.

Provocation short of initial aggressor. Even where a person was not technically the first to throw a punch, deliberate provocation designed to create a pretext for using force can defeat the reasonableness of that force under subsection (a). Courts evaluate whether the force used was truly the response of a reasonable person or whether the defender manufactured a justification.

Excessive force. The "and no more" limitation in subsection (a) is real. Responding to a shove with a firearm, or continuing to use force after the threat has clearly ended, risks the justification. Wyoming law does not require a defender to find the minimum possible level of force, but it does require that the level of force chosen be one a reasonable person would have judged necessary in the circumstances.

Exceptions to the presumptions. The castle doctrine presumptions in subsections (b) and (d) do not apply when the entrant is a lawful co-resident without a disqualifying protection order, when the person is a child in the entrant's lawful custody, or when the entrant is a peace officer or corrections employee acting officially. Attempting to use these presumptions to justify force against a co-resident during a domestic dispute, for example, is likely to fail on the face of subsection (c).

Officer liability. Peace officers and corrections employees acting in their official capacity fall within subsection (c)'s carve-out from the castle doctrine presumptions. Using defensive force against a law enforcement officer conducting a lawful entry is not protected by the castle doctrine presumptions in subsections (b) and (d); the legality of that force would be analyzed under other principles.

Legal disclaimer: This article provides general legal information about Wyoming self-defense law as of June 2, 2026. It is not legal advice and does not create an attorney-client relationship. Use-of-force situations are among the most fact-specific and consequential events in criminal law, with outcomes that can include felony conviction, civil liability, or both. The statutes cited here reflect their in-force versions as of June 2, 2026, verified at wyoleg.gov; laws can change. Do not rely on this article for any specific situation. Consult a criminal-defense attorney licensed in Wyoming before making any decisions about your rights or obligations involving the use of force.

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Sources

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Last updated: June 2, 2026. Wyoming statutes verified at wyoleg.gov as of June 2, 2026.

For Wyoming property and adverse possession law, see Wyoming squatters rights and adverse possession laws.

For laws in other states, see self-defense laws by state.